Get a list of all tables in the database along with their column information. Use this first to understand the database structure before querying.
AI agents call listTables to retrieve information from Cloudflare Remote PostgreSQL MCP Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool retrieves database structure information (tables and columns) for discovery purposes only. It has no side effects, does not modify data, execute code, or delete anything. It is a straightforward informational query, fitting the Read category. Severity is low because schema information disclosure is generally less critical than actual data access, though context-dependent.
From the tool's definition Tool name 'listTables' and description 'Get a list of all tables in the database along with their column information' indicate retrieval of schema metadata without modification or execution of arbitrary operations.
Attacks that exploit this kind of access
Get a list of all tables in the database along with their column information. Use this first to understand the database structure before querying. It is categorised as a Read tool in the Cloudflare Remote PostgreSQL MCP Server MCP Server, which means it retrieves data without modifying state.
Register the Cloudflare Remote PostgreSQL MCP Server MCP server in PolicyLayer and add a rule for listTables: allow, deny, rate-limit, or require approval. Point your MCP client at the PolicyLayer proxy URL and the rule is enforced on every call, before it reaches Cloudflare Remote PostgreSQL MCP Server. Nothing to install.
listTables is a Read tool with low risk. Read-only tools are generally safe to allow by default.
Yes. Add a rate_limit block to the listTables rule in your PolicyLayer policy. For example, setting max: 10 and window: 60 limits the tool to 10 calls per minute. Rate limits are tracked per agent session and reset automatically.
Set action: deny in the PolicyLayer policy for listTables. The AI agent will receive a policy violation error and cannot call the tool. You can also include a reason field to explain why the tool is blocked.
listTables is provided by the Cloudflare Remote PostgreSQL MCP Server MCP server (makaveli006/mcp-sentry). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
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